Question:

Mature Graafian follicle is generally present in the ovary of a healthy human female around

Updated On: Jul 6, 2022
  • $5-8$ day of menstrual cycle
  • $11-17$ day of menstrual cycle
  • $18-23$ day of menstrual cycle
  • $24-28$ day of menstrual cycle
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The Correct Option is B

Solution and Explanation

Starting from puberty, monthly changes in ovaries and uterus also starts. The layer of cells surrounding primary oocyte are called granulosa cells and together, they are called primary follicle. The growth of the follicles is under the influence of pituitary hormones $FSH$ and $LH$. Further growth is also stimulated by estrogen. The mature Graafian follicle is present in the ovary around $11-17$ day of menstrual cycle and on rupture of which, ovum is released (because of $LH$ surge, $1-2$ days before ovulation). So, the correct answer is '$11-17$ day of menstrual cycle'.
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Notes on Menstrual Cycle

Concepts Used:

Menstrual cycle

Menstrual cycle is the monthly series of changes a woman's body goes through while having a possibility of pregnancy. Each month one egg is released by the and this process is called ovulation. If ovulation takes place and the egg isn't fertilized, the lining of the uterus sheds through the vagina. This is a menstrual period.

Menstrual cycle irregularities can have many different causes, including:

  • Pregnancy or breast-feeding. 
  • Eating disorders, extreme weight loss or excessive exercising. 
  • Polycystic ovary syndrome (PCOS)
  • Premature ovarian failure
  • Pelvic inflammatory disease (PID)
  • Uterine fibroids